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AC adapter, Model PA-1121-08 for Toshiba Satellite A75 laptop PA 3290U-2A2CPA3290E-2A2C Input 100-240V 2.0A Output 19 V, 6.3A Power goes on and off as if there is a short in it, if I bend the cord just right it will charge, but often stop. Can it be repaired or does it need replacement?

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The correct (political) answer is that your should ALWAYS replace power cords.

Today's computers power supplies have two parts, the wall plug, 3 prong, and the transformer with the "PORT" plug for the laptop.

The 1st part, you can buy new or a qualified technician can splice out the bad part.
The second part, is usually a DC (direct Current) cable with special grounds and insulation. The molding that houses the electrical wires is not accessible to consumers for that very reason. If you have to bend the cable to make the connection, then the plug is clearly defective and SHOULD be replace. In a pinch, depending on how far the break is on the plug, it might too be spliced.

Replace it as soon as possible.

Posted on Sep 29, 2010

Testimonial: "Good technical advice. thanks"

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Toshiba 1905-s301 wont run on just ac power


Check your AC Adapter for voltage output using a multi-meter. If voltage is lower than stated replace Adapter. When replacing adapter verify Amperage is same before purchase.

Dec 18, 2013 | Toshiba Satellite 1905-S301...

1 Answer

Can i use any charger on s505


The Toshiba Satellite 5205 series of Notebook PC, and the S505 series model; uses an AC adapter (Charger) that produces 15 Volts DC.

http://www.sparepartswarehouse.com/Toshiba,Satellite,5205,PS520U-31P1RV,Laptop,AC-Adapters.aspx

You will see AC adapters sold that show 15 to 24 Volts. (DC)

http://www.duracelldirect.com/toshiba_satellite-5205-s505_ac-adapters_laptop_ac-b20h.aspx

This is because the AC adapter (Charger) has PFC.
Power Factor Correction,

http://www.hardwaresecrets.com/article/Everything-You-Need-to-Know-About-Power-Supplies/181/2

Also I see it is just a two pin AC adapter plug, to laptop.
Center hole is Positive, outer metal cylindrical metal shell is Negative.

Go for 75 Watts or higher though, and not a 65 Watt model.

[ On the case of the AC adapter;
Input: 100 ~ 240 VAC 50-60Hz

Means it can use from 100 to 240 Volts AC, and either 50 or 60 Hertz.

Output: 15VDC 6A

Means 15 Volts DC at 6 Amp's. (Amperes)

Watch the outside dimension of the cylindrical part, and the center hole dimension. Outside cylinder may be correct, but center hole may be too small. Or vice-versa.

Regards,
joecoolvette

Dec 17, 2012 | Toshiba Satelite 5205-S505 Notebook

1 Answer

Intermittent power supply, problems whit the jack, how I can change that? thanks, Ing. Elton Vargas


1) Check to make sure the problem isn't the cable going into the plug, from the AC adapter. (Charger)
A lot of times, where the wires meet the back of the plug, that goes into the laptop DC Power Jack, is bad.
The wires have a break from becoming stretched. Makes an intermittent contact.
Same thing for where the wires meet the charger body.

AC adapter plugged into power, unplugged from laptop, use a multimeter set to the DC voltage scale.
Use the alligator clip attachments for the probe leads, attach the probe lead's to the AC adapter's plug, and wiggle the wire, check for an intermittent break.

2) AC adapter (Charger) unplugged from laptop, Battery removed, see if you can wiggle the center pin of the jack.
You may find the entire DC Power Jack will move a little.

If the center pin does not move, but the entire body of the jack does, the jack may just need to be
resoldered to the motherboard. The solder connections may be cracked.
If the center pin moves, replace the jack.

To replace the DC Power Jack, or repair the solder connections,

1) Remove all power to the laptop. AC adapter and Battery.

2) Observe Anti-Static Precautions:
Buy and wear an ESD wrist strap. (Electro Static Discharge) Connect the alligator clip to a good ground source. I connect mine to the metal frame of an open, empty desktop computer case.
(You don't need an Anti-Static Mat)
The price of an ESD wrist strap is around $3 to $8. Found in a multitude of places.
Example,

http://www.costcentral.com/proddetail/Cables_Unlimited_Anti_Static_Wrist_Strap/ACC1400/10720671/froogle/

3) Completely disassemble the laptop down to the bare motherboard in your hand.
No Processor, Heatsink assembly, peripherals, nada.

TIPS:
A) You may wish to take photos, or make a video as you disassemble, for your first time. Also make notes.
After the first laptop the next one becomes easier.
(All of them follow a basic path when disassembling. Toshiba, HP, Acer, Gateway, you name it)

B) Use a multi-container for the various screws. Label each container for the area the screws came out of.
There may be 60 or more screws, and 12 different types of screws. Some look VERY similar to each other, but are NOT. DO NOT mix them up.
You can use a clean egg container in a pinch. Label each egg holder.

C) Take your time, use patience. Practice your soldering, de-soldering skills before working on the Toshiba's DC Power Jack, if you're rusty.
Use Desoldering Braid, and not a Desoldering Tool. (Solder S-ucker) The desoldering braid works MUCH better! (Also known as solder wick)


Pictorial, with details on how to disassemble the Toshiba Satellite A70, or A75 series of laptops,

http://www.irisvista.com/tech/laptops/ToshibaA75/satA75_1.htm

You can click on each photo to enlarge.
Page 2, and 3 icons are at the bottom.
(You are on Page 1.
Page 1::Page 2::Page 3 )


One source for a Toshiba Satellite A75-S209 DC Power Jack,

http://www.laptopjacks.com/view_part/For-Toshiba-Satellite-A75-S209-DC-Power-Jack-TS51625.html

Toshiba Satellite A70 series Service Manual, (Free)

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-toshiba

Go down to the line that begins with Satellite A10.
Scroll across to A70, and click on it.
This is a PDF file. May take up to 30 seconds before you see the first page.
May take additional time to fully download.
(Took me around 40 seconds before I saw the first page, with a medium speed DSL connection)

Regards,
joecoolvette

Oct 20, 2010 | Toshiba Satellite A75-S209 Notebook

1 Answer

Toshiba Satallite a75-s2112 laptop when plugged into a/c power, the ac power stops working, then goes to battery. If I unplug the power adapter and plug it right back in , it will start working and then go...


This is a problem with your charger, I had the problem with my toshiba Sattelite, it was either a break in the wire or a short in the brick. You need to purchase a new charger.

Dec 23, 2009 | Toshiba Satellite A75-S211 Notebook

1 Answer

I have a Toshiba Satellite Laptop Model A15-S129 - The unit shut down and never would restart. I Checked the AC Adapter and it has no DC output voltage. I do have a 15VDC 2A Adapter connected to it now,...


hello..if you need to run @ safe the unit only up to 16v 2amp DC u need to try input..do not try higher from 16v DC or Lower 15v DC..or you need buy a new..Thanks And Good Luck...^_^

May 17, 2009 | Toshiba Satellite A135-S4467 Notebook

1 Answer

Laptop not running on battery


try another power supply, they can have voltage problems and still have ample voltage to run the laptop but not fully charge the battery.

Apr 13, 2009 | Toshiba Satellite A75-S1253 Notebook

2 Answers

Screen black & with no power


hi there,

you can follow this instruction and try to your laptop to resolved the problem.

A bad connection between DC-IN power jack on the system board and the system board is a very common problem with Toshiba Satellite M35X and Toshiba Satellite A70/A75 notebooks. If your laptop is out of warranty, then you can fix the problem by resoldering DC-IN jack on the system board. If it’s still under warranty, it would be fixed at no charge to you.
Problem symptoms:
  1. Laptop randomly shuts down without any warning.
  2. Power LED and battery charge LED start flickering when you wiggle the power cord or the AC adapter tip on the back or your laptop.
  3. The battery will not get charged.
  4. When you plug AC adapter, the laptop appears to be dead and there is no LED activity at all (DC-IN jack on the system board is broken).
To fix the problem, you have to take your laptop apart, remove the system board to resoleder or replace the DC-IN jack. Toshiba Satellite M35X and Toshiba Satellite A70/A75 disassembly guides will help you to remove the system board. Take a closer look at the power jack on the system board with a magnifying glass. In most cases you get the power problem because of a bad connection between the DC jack and the system board, you’ll see a crack between the DC jack connector and the system board.
Here is an example of Toshiba Satellite M35X power jack. The crack occurs between the DC jack pin and the system board.
satellite-m35x-crack.jpg satellite-m35x-contact.jpg In some cases the connection is good, but the DC jack is bad itself. You can find a new DC jack for Toshiba Satellite M35X and Toshiba Satellite A70/A75 laptops here. Search for DC jack M35X or DC jack A75.
How to resolder laptop power jack yourself.
UPDATE:
Sometimes, after you replace the jack, you can see that the system board doesn’t get power at all. The battery will not charge and the power LED will not light when you plug in the AC adapter. So, here’s a possible explanation.
When a connection between the positive pin and the motherboard breaks (cracks), the power jack gets loose. You can feel it when you plug in the adapter plug. A loose power jack can damage the trace inside the hole in the system board. Take a look at the picture.
power-jack.gif As you see, the positive pin goes through the hole in the system board and you solder it on the top side. Right? What if the trace between the top side and the bottom side is broken somewhere inside the hole? I’ve seen it before a few times. In this case everything looks nice and clean on the top side. When you plug in the AC adapter, you get normal voltage readings between “+” and “-“ pins on the top side, but the power DOESN’T go to the motherboard at all, because there is no connection between the top and bottom sides. Test with a multimeter if there is a connection between the top and the bottom.
If the trace inside the hole is broken you still can fix it. You can run a wire to connect the top and the bottom sides. Be careful not to short something on the board.
Update:
Here’s another solution to fix the power jack problem, it shows how to relocate the power jack outside the laptop base. Check it out here: Toshiba Satellite A75 failed power jack workaround.
When you repair a loose power jack, it’s a good idea to check the jack on both sides of the motherboard. When you remove the top cover from a Toshiba Satellite A70/A75 laptop you can see only points where the jack is soldered to the motherboard as it shown on the second picture in this post, but you cannot see the jack itself as it shown on the first picture.
Removing the motherboard from Satellite A70/A75 laptop is a good idea because the jack itself might has a broken “+” pin, as it shown on the picture below. If the “+” broke off the base, you’ll have to replace the jack.
power-jack-broken.jpg

Feb 15, 2009 | Toshiba Satellite A75-S229 Notebook

1 Answer

AC adapter receptacle on motherboard


http://www.laptoprepair101.com/laptop/2006/01/28/toshiba-satellite-m35x-a75-power-jack-problem/ Hope this helps a little.

May 19, 2007 | Toshiba Satellite L25-S119 Notebook

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